Speed-indicator.



No. 874,594. PATENTED DEG,,24, 1907. F. F. INGRAM.

SPEED INDICATOR.

APPLICATION rmm my 28,1907- 2 SHEETS-SHEET 1.

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PATENTED DEC. 24, 1907.

PjP. INGRAM. SPEED INDICATOR.

APPLICATION FILED HAY 28,1907.

2 SBIEETS-SHEET 2.

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r invention; Fi 2 is a vertical section thro To all whom it may'poncem:

v cation, reference being had therein to the ao ship and which will be of simple, sfirong, durable and comparatively inexpensive con p .VVith the above and other objectsfi n the inventlon consists "in the novel'features A of construction and combination and ardial with its casing removed; Fig. 4 is a cle-- through the sleeve 23 and the apri htz, the

gear segment and the 'arm upon the operatingrod.

. its lower end screwed into the base, as seen slot 5 which also extends longitudinally.

; 5fconescats for annular rows of bearin STATES FRED INGRAM, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR OF ONE-HALF TO ALBERT S.

P' rENT IQFFICE- WILSON, OF SAN DIEGO, CALIFORNIA.

SPEED-INDICATOR.

No. 874,594. Specification of Application filedVMay 28 1901 Serial Noai'l lfhllzl. i

Beit known that I, FR ED ;F. IN RAM, a citizen of the-United States, residing at San: Francisco, in the county of San Francisco. and State of California, have invented oer-f, tain new and useful Improvements in Speed- Indicators, of which the followin is a specificom anying drawing. 1}

y invention relates to improvements in speed indicatorsand more particularly to one especially ada' ted for use upon a marine engine for indica't n the number of revolutions perminute of'lts shaft-.'.

One object of the inventidn is to provide an indicator of this character which will not be affected by the rolling and pitching of the struction.

rangement of-i arts hereintiifter described and claimed, andi lustrated'in the accompanying drawings, in which- Q Figure 1 is a front elevation of a speed indicator constructed in accordance with my the same; an Fig. 3 is a rear elevation of t e tail horizontal section through the casing and Fig. 5 is a detailed vertical section plane of the section being at ri ht angles to that ofFig. 2.] Fig. 6 is a detall view showing the slot and pin connection between the Referring to the drawings by numerals, 1 denotes a suitable ba'selate or sup ort from which projects an'uprig t 2. The atter has in Fig. 2, and adjacent to its center is formed an annular enlargement 3, the outer surface of which is of polygonal shape for the reception of a wrench or similar tool by means of which the u right may be rotated. In the upper end 0 the upright is formed a longitu' dmally extending opening or bore ;4,- the lower end of which opens into a transverse Arranged upon the lower: portion of the upright is a rotary sleeve Shavin mp Letters Patent.-

V j.. .,Patented Dec. 24,1907,

their seats by a cone ring 9 which surrounds .the upright and abut against the enlargement or lntegral nut 3. The balls 8 of the lowerseries are held upon their seat by a I similar cone ring 10 which surrounds the upengage the top of the latter. 7 It will be 'see that by loosening orfsorewing the upright-4 partially out of its base, thesleeve or 'nutll' 'l maybe turned for the purpose offadjusting i the bearing balls 7, 8. At the lower. end of f 7, 8. The upper balls 7= are retained upon cofq the rotary sleeve 6 is provided a beveled gear 13 which meshes witnanchais driven by a SlIDlif lar gear 14 up'jon ahori'zontal shaft 15. At the upper end of thesleeve 6 is anannular enlargement drjcollarformed at diametric:

ally opposite withsp acedear's"or lugs 16 between which are'pivoted by screws or .the like 17 the lower ends of links 18.

5 'The 'links 18 have pivoted in their bifur- 20. The upper ends of the arms 19 are bifurcated and lvoted upon ears 21formed'at diametrical y o posite points upon a collar or sleeve 22 w surroundsf and rotates upon an inner sleevef23 mounted for sliding movement upon the upper portion of the up- -cated upper ends arms 19 which carry u on their lower ends centrifugal balls or weig ts a Q I right 2. The inner sleeve. 23 has at its lower end an annular, flangeor' collar 24 and pro j ecting through it"and through the transverse slot 5 1n the upright is a cross piece or pin 25.-

.Thelatter is adapted to slide in the slot 5' as the sleeve 23 is moved longitudinally upon the upri ht and screwed into its central por 1 i tion is t e lower end of a rod 26 which ex tends through the bore or central opening'4 in the top of the upright and is adapted to operate an indicating mechanism presently described.

To reduce friction between the rotating sleeve 22 and the sliding sleeve 23 I rovide two annular rows 27, 28 of bearing ha s. The i 1 balls of each series engage cone seats formed withinthe outersleeve 22 and those of the lower series are held upon their seats by a {cone ring 29 which surrounds the sleeve 23 and engages the shoulder formed by theflange 24. The balls of the up er series are held upon their seats by a si ar cone ring 30 which surrounds the sleeve 23 and is retained in position by a sliding collar 31 adapted to be secured in an adjusted position by a set screw 32. This collar 31 permits t e bearing balls 27, 28 to be properly adjusted as will be readily understood upon reference to Fi 2. When the sleeve 6 is rotated its motion will be imparted through 4 the connecting armsor links to the sleeve 22 and the balls or weights 20 will be thrown outwardly so that the sliding sleeve 23 will be drawn downwardly against the tension of a coilspring 32 which surrounds the upright 2 and is confined between thebottom of the sleeve 23 and a nut 33. The latter is screwed upon a threaded portion 34 of the upright immediatelyIaboveQthe enlargement 3 and its outer surface is preferably knurled so that it may be readily turned to vary the tension of said spring.

An indicating device is removably mounted upon the top of the upright 2 and comprises a dial plate 34 having upon its front suitable graduations 35 and an annular rim or flange which su dports a glass covering 36. Projecting rearwar y from the lower ortion of the late 34 is a lug 37 aperture to-receive t e upper end of the upright 2 and adapted to be removably and suitably secured thereon by a set screw 38.v A cylindrical casing 39 fits over the lug 37 and surrounds the rear portion of the late 34" to inclose the operating arts whic it carries. This casing is remova lily secured upon the late 34 by threaded studs 40 which roject cm the rear of said late and through apertures in the casing an have milled nuts upon their outer ends, as clearly shown in Fig. 3.

Mounted in suitable bearings upon the dial plate 34 is a concentrically arranged shaft 41 provided upon its outer end with a pointer 42 to co-act with the graduations 35 and upon its inner end with a pinion 43 ada ted to mesh with a gear segment 44'whic is suitably ivoted or journaled upon the dial plate. s segment is formed with a slot 44' to receive a pin upon a link or arm 45 which latter is apertured adjacent to one of its ends to receive the up er end of the rod 26 which latter is adjusta ly secured in said aperture by a set screw 46. A hair spring 47 is provided between the shaft 41 and its hearing or support for the purpose of overcoming lost motion in the segment and pinion and keeping the same at a fixed tenslon.

The shaft 15 is mounted in suitable ball bearings 48, 49 arranged in upright bearings or supports 50 u on the base 1 and secured upon said shaft ntermediate its bearings is an upright wheel 51. The shaft 15 may be connected to the shaft of an engine or a counter shaft in any suitable manner but I preferably provide upon the outer end of the with a similar one upon the drivlng shaft.

The operation of the machine Wlll be readily understood from the foregoing description taken in connection with the drawings. It will be seen that when the shaft 15 is rotated its motion will be im arted through the beveled ears 13, 14 to t 'e sleeve 6 which latter wil cause the sleeve 22 and the connecting links to rotate. As these links or arms rotate the balls 20 fly outwardly and draw the sleeve 23 downwardly u on the u right 2. As the sleeve 23 moves ownward y it carries the rod 26 with it and owing to the connection of the upper end of said rod with the segment or quadrant 44 the latter will be turned to rotate the pinion. 43 and hence the shaft 41 and its pointer or indicating hand 42. As the latter travels over the dial it indicates the movement or revolutions of the shaft of the engine or of any other machine upon which the device is used.

By constructing the device as set forth it will be seen that it is especially well ada ted for use upon a marine engine since it wil not be affected by the rolling or rocking of the ship. The ball bearing mountings for the two rotar sleeves and the substantial connections structure strong and durable and the provision of the fly wheel upon the shaft 15 tends to further steady the parts while in oporation so that the reading of the samewill not be affected by the movement of the ship.

While the machine is es ecially well a'dapted for marine use it will e understood that it may be used upon engines or machines of any description where it is desired to indicate the speed or the movement or revolutions of a shaft or other rotary element.

I claim and desire to secure by Letters Patent is:

1. In an indicator of the character described, an upright having a transverse longitudinally extending slot and a longitudinal o ening extending from said slot to its top, a s 'ding sleeve surrounding said upright, a

ing through said transverse slot in the up right, an indicating vmechanism a rod extending through the longitudinal opening in the upright and connected at its upper end to sald mechanism and at its lower end to said cross piece, a rotary sleeve u on said upright, a rotary sleeve upon said s 'ding sleeve and links connecting said rotary sleeves and carrying centrifugal wei hts.

2. In an indicator 0 the character described, an upright having a transverse longitudinally extending slot and a longitudinal o ening extending from said slot to lts top, a s 'ding sleeve surrounding said upright, a cross piece carried by said sleeve and extending through said transverse slot in the upshaft 15 a beveled pinion adapted to mesh etween said sleeves "render the Having thus described my invention what cross piece carried by said sleeve an extendanion-WWW W right, an indicating mechanism, a rod extending through the longitudinal opening in the upright and connected at its upper end to said mechanism andat its lower end to said cross piece, a rotary sleeve upon said upright beneath said sliding sleeve, a rotary sleeve upon said sliding sleeve, centrifugal devices connecting said rotary sleeves, a coil spring surroundin said u right and engaged with the lower end of said shding sleeve/and an adjusting nut upon said upright and engaged with the low er end of saidcoil sprin 3. In an indicator of the character escribed, an upright having a transverse-longitudinally extending slot and a longitudinal o ening extending from said slot to its top, a

s iding sleeve surrounding said upright, a

cross piece carried by said sleeve and extend ing through said transverse slot in the upright, an indlcatlng mechanlsm, a rod extending through the longitudinal opening in the upright and connected at its upper end to said mechanism and at itslower end to said cross piece, a rotary sleeve uponsaid upright, a rotary sleeve upon said slidin sleeve, anti-friction bearings for-each of sai rotary sleeves, weight c'arryin arms pivoted to the upper rotary sleeve, Iinks pivotally connecting the lower rotary sleeve and said arms, a coil spring surrounding said u right, and engaged with the lower endof said s lidlng sleeve and an adjusting nut uponsaid upright and engaged with the lower end of said coil spring.

4. In an indicator of the character described, an upright having a transverse longitudinally extending slot and a longitudinal opening extending from said slot to its top, a sliding sleeve surrounding said u right, a cross piece carried by said sleeve anrl extending through said transverse slot in the upright, an indicating mechanism, a rod extending through the longitudinal opening in the upright and connected at its upper end to said mechanism and at its lower end to said cross piece, a rotary sleeve u on said upright, a rotary sleeve upon said sliding sleeve, centrifugal weight carrying links connecting said rotary sleeves, anti-friction ball bearings for each of said rotary sleeves, a shaft, anti-friction ball bearings therefor, a fly wheel u on said shaft and gearing connectin sai shaft and said rotary sleeve upon t eupright.

5. In an indicator of the character described, an upright having a transverse longitudinally extending slot and a longitudinal opening extending from said slot to its top, a sliding sleeve surrounding said upright, a cross piece carried by said sleeve and extending through said transverse slot in the u right, a centrifugal device for actuating said sliding sleeve, a dial plate having an apertured portion to receive the upper end of said u right, a set screw for clamping said dial p ate upon said u right, a concentric shaft -mounted in said ial plate, a pointer upon said shaft, a pinion upon said shaft, a gear segment to mesh with said pinion, a link connected to said segment and having an aperture to-receive the upper end of said rod and a set screw for clamping said rod in said aperture.

In testimony whereof I hereunto aflix my signature in presence of two Witnesses.

FRED INGRAM. 

